Anyone using a Gear Venders O/D unit?

This is a great question, I wish someone could share some info.

Ask HemiDenny about his gear vendors. He loves it. Duster, Hemi, 4 speed, 430? gears and a gear vendors. 2200 RPM at 70 MPH. Don't trust me on the numbers because its late and I'm having a rum or eight but Denny can verify them.